Hey guys. I am going to buy a norton4/8. I already have a coticule and a few barber hones that i have been using quite well. My question is should i spring for the kit that comes with the 1k 4/8k and the lapping plate. I need to be able to do it all from begining to end and i need the right tools to do it. If i were working on a bmw i would be trying to remove head bolts with a 3/8 drive ratchet so why not have the right tools for this. And also i have read that the 4/8 is not good to go out of the box and it must be lapped first before using. how true is that? if its a man made stone it must be flat.